Anatomy of
the Dogfish Shark:
External Morphology, Muscular System, Digestive and
Respiratory Systems, Urogenital
System
QUIZ: All 4 figures on page 35; Fig. 4-3 on page 51.
I. ANATOMY OF THE DOGFISH SHARK
A. EXTERNAL MORPHOLOGY, Exercise 1. p. 31-35
Accomplish
entire exercise – be sure to look at shark of opposite sex. OMIT
Integument but NOTE: Sharks possess PLACOID SCALES
B. MUSCULAR SYSTEM, Exercise 3. p. 45-48
Accomplish
entire exercise. OMIT the 2nd levator (right
column on p. 46).
NOTE
THE FOLLOWING NAME CHANGES AS DISCUSSED IN LAB:
First dorsal constrictor = spiracular
and mandibular adductor.
First ventral constrictor = intermandibular.
First levator = palatoquadrate levator.
Third to sixth levators = cucullaris.
C. DIGESTIVE AND RESPIRATORY SYSTEMS, Exercise 4. p. 49-53.
Accomplish
the entire exercise with the following OMISSIONS.
OMIT: hepatic and pancreatic ducts (p. 50)
"Mesenteries" (p. 50)
D. UROGENITAL SYSTEM, Exercise 6. p.
65-67. Again, be sure to look at a shark of the opposite sex.
Accomplish
the entire exercise with the following OMISSIONS.
OMIT: mesorchium (p. 66)
efferent ductules (p. 66)
accessory mesonephric ducts (p.
66)
mesovarium (p. 66)
ostium tubae
(p. 66)
shell gland (p. 66)
mesonephric duct for females (p.
66)